Which of the following is the expression for emf induced in primary with voltage applied to primary of an ideal transformer?

Which of the following is the expression for emf induced in primary wi

1.	Which of the following is the expression for emf induced in primary with voltage applied to primary of an ideal transformer?
A.	e=V
B.	V= 2ecos t
C.	e= 2Vcos t
D.	Cannot say
Answer» D. Cannot say